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Oxidative phosphorylation in creatine transporter deficiency
Author(s) -
Li Shizhe,
Bianconi Simona,
Veen Jan Willem,
Dang Do An,
Stolinski JoEllyn,
Cecil Kim M.,
HannahShmouni Fady,
Porter Forbes D.,
Shen Jun
Publication year - 2021
Publication title -
nmr in biomedicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.278
H-Index - 114
eISSN - 1099-1492
pISSN - 0952-3480
DOI - 10.1002/nbm.4419
Subject(s) - oxidative phosphorylation , transporter , creatine , chemistry , phosphorylation , biochemistry , oxidative stress , medicine , gene
X‐linked creatine transporter deficiency (CTD) is one of the three types of cerebral creatine deficiency disorders. CTD arises from pathogenic variants in the X‐linked gene SLC6A8. We report the first phosphorus ( 31 P) MRS study of patients with CTD, where both phosphocreatine and total creatine concentrations were found to be markedly reduced. Despite the diminished role of creatine and phosphocreatine in oxidative phosphorylation in CTD, we found no elevation of lactate or lowered pH, indicating that the brain energy supply still largely relied on oxidative metabolism. Our results suggest that mitochondrial function is a potential therapeutic target for CTD.